Improvement in shuttle-box-operating mechanisms



n. B; GOODYEAR.

Shuttle-Box Operating Mechanisms N0.144,089. Patented 0ct.28,1873.

Wiliiwaeq g w 2 4 III AM Pl/07'0-l/7i/MRAfH/0 60, IV. X/osmwz's PROCESS)Uivrrnn STATES PATENT OFFICE;

ROBERT B. GOODYEAR, OF WILMINGTON, DELAWARE, ASSIGNOR TO HIM- SELF ANDJOHN GEEENHALGH, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN SHUTTLE-BOX-OPERATING MECHANISMS.

Specification formingpart of Letters Patent No. 144,089, dated October28, 1873; application filed August 29, 1873.

To all whom it may concern:

Be it known that I, ROBERT E. GOODYEAR, of WilmingtoinNew Castle county,State of Delaware, have invented an Improvement in Drop-Box Looms, ofwhich the following is aspecification The object of my invention is toeffect the various adjustments of the drop-boxes oflooms through themedium of simple mechanism, and without the usual jerking and rattlingmovement of the parts. I attain this object by the combination of apawl, A, operated from the cam-shaft of the loom, and controlled in itsmovements by a pattern wheel or chain, with two stepped levers, B and F,to the former of which is hung a rod, D, for sustaining; the drop-boxes,the said rod being elevated by the lever B, and sustained, after eachadjustment, by one of the shoulders at of the lever F,which is acted onby a spring, b, or its equivalent, and being eased in its descent by thecam-like inclines d of the said lever F, when the latter is pushed backby the pawl A, all as plainly shown in the side elevation, Figure l, andperspective views, Figs. 2 and 3, of the accompanying drawing.

- My invention will be fully understood from the following detaileddescription of its construction and operation.

G represents one of the side frames of the loom, and H the cam-shaft, onwhich are two cams, e and e, the former of which imparts a reciprocatingmovement to a rod, I, guided at its outer slotted end by the same fixedpin J to which the stepped levers B and F are hung, the said rodextending between the two levers, and sustaining at its extreme outerend the pawl A, which is vibrated in either direction, according as itis required to act upon one or the other of the stepped levers, by apatternwheel, K, through the medium of a lever, f, and

connecting-rod g, the said pattern-wheel deriv' 7 ing its movement,through a pawl and ratchet,

2 and 3.) Upon the other arm of the bell-crank lever B are formed twosteps, 70 and k, similar steps 6 and l being formed upon a projection ofthe lever F; and the portion of the latter overhun g by the projectiont' of the drop-box rod is so shaped as to form three abrupt shoulders,a, a and a between which are two camlike inclines, d and d. Both of thelevers B and F are hung loosely to their fulcrum-pin J, and both areturned'in the direction indicated by the arrows 1, Fig. 3, although notsimultaneously, by the pawl A, which is directed toward one or other ofthe steps 70 or Z, according to the movement required. The lever B isturned in a direction the reverse of thatindicated by the arrows 1 bythe weight of the drop-boxes through the medium of the rod D, while thelever F has a constant tendency to turn in the same reverse direction,owing to the action of its spring b.

In Figs. 1 and 2 the highest box, H, is oppo= site the shuttle-race, toobtain which adjustment the pawl A has been turned to such a position bythe pattern-wheel and its connections as to be directly opposite thestep I of the lever F, so that when thesaid pawl and its rod I weremoved in the direction of the arrow 3 the said lever F should be turnedin a corresponding direction to the extremity of its movement, theprojection t of the rod D slipping gradually over the cam-like inclined, and permitting a correspondingly gradual descent of the boxes bytheir own weight, until the said projection rested upon the shoulder W,as shown; and during this same movement the lever B was, owing to thedescent of the shuttle-boxes, turned in a direction the reverse of thatof the lever F, to the extremity of its movement, or to the positionshown in Fig. 2.

If, after this, it were required to bring the lowest shuttle-box, Hopposite the race, the pawl A, when drawn back, would, by means of thepattern-wheel, be turned to such a position as to-strike the shoulder kof the lever B when moved forward 5 and in such case the said lever Bwould be turned to the extremity of its movement in the direction of thearrow 1, lifting the rod D and the shuttle-boxes, and permitting thelever F, owing to the action of its spring, to turn in the reversedirection, as

indicated by the arrow 2, until the projection i of the box-rod restedupon the shoulder a, by which the said rod and boxes would be sustained.as shown in Fig. 3, during the movement of the parts to effect the nextadjustment.

When the second box, H is opposite the shuttlerace, the weight of thewhole number of boxes, and of the rod, is sustained by the shoulder a ofthe lever F, the latter, whenever the boxes are raised, slipping underthe projection i of the box-rod, and facilitating the adjustment of andsustaining the same after adjustment, while, when the lever F is pushedback by the pawl, its inclines d, over which the projection 6 slides,ease the descent of the boxes, and prevent the usual sudden jerking andjarring of the parts caused by the dropping of the boxes.

If, at any time, the pawl A, owing to imperfect adjustment, were toengage with and push back both levers at once, neither could be injured,as the boxes would be simply raised by the lever B, and the lever F,acted on by its spring or Weight, would yield until the pawl wasretracted.

In applying my invention to a loom having more than three boxes, thenumber of steps, and of inclines and shoulders, on the levers B and Fwould have to be correspondingly increased.

I claim as iny invention- 1. In a drop-box loom, the combination,substantially as described, of a pawl, A, controlled by a pattern wheelor chain, the stepped lever B, and the rod D, supporting the drop-boxes,and hung to and deriving its upward movement from the said lever B.

2. The combination, substantially as described, with the drop-box rod D,of the lever F, acted on by a spring or weight, and formed with a seriesof cam-like inclines and shoulders for facilitating the properadjustment of the said rod, and for sustaining the same afteradjustment.

3. Ina drop-box loom, the combination, sub stantially as described, ofthe stepped lever B, the stepped cam-lever F, the pawl A, controlled bya pattern wheel or chain, and the drop-box rod D, hung to the said leverB.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ROBT. B. GOODYEAR.

WM. A. STEEL, HARRY SMITH.

